Lathe.



PATENTED DEC. 6, 1904.

R. F. SCOTT.

LATHE.

APPLIoATIoN FILED :mlm 2, 1904.

2 SHEETS-SHEET ,1.

Nl.) MODEL.

Wl TNESSES `lalnLErITLI) DBO. 6, 1904.

R. F. SCOTT.

LATHE.

APPLIUATION FILED JUNE 2. 1904.

2 SHEETS-SHEET 2.

d (m i w IVI T/IE SSE S N. N M I T A llNTTnn STATEs `Patented. December6, 1904.

PATENT Ormea ROBERT F. SCOTT, OF PHILADELPHIA, PE

NNSYLVANIA, ASSIGNOR TO EDWIN HARRINGTON, ,SON AND COMPANY,INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION.

LATHE.

SPECIFICATION forming part of Letters Patent No. 776,554, dated December6, 1904.

Application filed June 2,1904. Serial No. 210,828.

(No model.)

.T0 all whom, t may concern:

Be it known that I, ROBERT F. SCOTT, acitizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain Improvements in Lathes, of which thefollowing is a specification.

This invention is designed primarily to provide means for turning workof extended dimensions.

The nature and characteristic features of the improvements will morefully appear by referencefto the following description and theaccompanying drawings in illustration therel of, of which- Figure lrepresents a top plan view of a lathe having my improvements appliedthereto. Fig. 2isa side elevation, and Fig. Sis an end elevationthereof.

As shown in the drawings, the improvements are applied to a lathecomprising the bed l, having the head 2 and the movable extension-shears3, between which and the head there is a gap 4. The head has securedthereto a strut 5, which supports an extensionguide 6, and theextension-shears have movable thereon the carriage 7, which supports anextension-guide 8.

Cross-slides 9 and l() engage the respective guides 6 and 8, in whichthey are moved by the respective screws 11 and l2, engaging the slidesand journaled in the bearings 13 and 14 on the guides. Fixed on the endsof the screws 11 and l2 arethe beveled gears l5 and 16, which areengaged by the beveled gears 17 and 18, held against rotation on a shaft19', journaled in the bearings 2O and 21, fixed to the extension-guides,the gear 17 being engaged by a spline 22, permitting the longitudinalmovement of the shaft through the gear. The screw 12 has an extension12', providing means for the engagement of a wrench or handle foroperating the screws to move the cross-slides and tool-rest 23 supportedthereby along the guides and adjust the position of the tool 24 withreference to the center 25, the tool being adjustable to pol sitions forworking beyond the periphery of the face-plate 26 and turning thesurface of a cylinder revolving in the gap and having a larger diameterthan the face-plate.

The tool-rest 23 is permanently fixed to the cross-slide l0 and isguided in the cross-slide 9 by the wedging wearing-plates 27, movable inthe bearings 28 on the slide by the screws 29. By adjusting' theposition of the carriage 7 and the tool-rest 23 relatively to thebearings 28 the longitudinal extent of the operation of the tool 24 maybe varied.

It will thus be seen that an extended cylindrical area may be turned bymeans of these improvements, which provide facility for doing workotherwise beyond the capacity of the lathe, a particular use thereforbeing found in turning and threading' drums for use in elevatormechanisms.

Having described my invention, I claim- 1. In a lathe, a bed, a guideconnected with and extending' transversely to and beyond said bed,extension-shears movable on said bed, a carriage supported by saidshears, a guide on said carriag'e extending transversely to and beyondsaid shears, slides movable on said guides and a tool-holder carried bysaid slides, substantially as specified.

2. In a lathe, a head, in combination with shears separated from saidhead by a gap, a guide connected with and extending transversely to andbeyond said head, a guide connected with and extendingtransversely toand beyond said shears, and a tool-rest having cross-slides movable insaid guides, substantially as specified.

3. In a lathe, a head, in combination with shears separated from saidhead by a gap, a guide connected with and extending transversely to andbeyond said head, a guide connected with and extending transversely toand beyond said shears, a tool-rest, cross-slides movable in said guidesand supporting said rest, and means for separating said slides andadjusting the position of said tool-rest with reference to one of itssupporting-slides, substantially as specified.

ing gears thereon for engaging and revolving the gears on said screws,said shaft being movable through one of the gears thereon, substantiallyas specified.

1n testimonyT Whereotl I have hereunto set my hand, this 1st day ofJune, 1904, in the presence of the subscribing Witnesses.

ROBERT F. SCOTT.

l/Vitnesses:

THOMAS S. GATES, UTLEY E. CRANE, Jr.

